w25q16jv interfacing with nRF 52833 board

Question

I am trying to interface winbond flash with the 33 board using ncs and VS code , I am able to get the code to compile and not receiving any errors , it is working and no matter what i send i am getting FF as a response

I have referred to Case ID: 261312

But As mentioned in the first link provided to change the .dts file . I cannot put in any pin configurations , if i do it is showing me a assert error for not having pin control in it , even when i try changing the pin numbers in the .overlay file I am getting the same issues .

/*
* Copyright (c) 2012-2014 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/

#include <zephyr.h>
#include <sys/printk.h>
#include <device.h>
#include <drivers/spi.h>
#include <hal/nrf_gpio.h>
#define MY_SPI DT_NODELABEL(spi3)
#define CS_PIN 16
#define SPI_MODE_CPOL 0
#define SPI_MODE_CPHA 0

static const struct spi_config spi_cfg = {
	.operation = SPI_WORD_SET(8) | SPI_TRANSFER_MSB |
		     SPI_MODE_CPOL | SPI_MODE_CPHA,
	.frequency = 50000000,
	.slave = 1,
	
};

static const struct spi_cs_control cs_pin = {
	.gpio_pin=16,

};

const struct spi_dt_spec *spi_dev = DEVICE_DT_GET(MY_SPI);

static void spi_init(void)
{

if (!device_is_ready(spi_dev)) {
       	printk("Could not get device\n");
}
}

void spi_test_send(void)
{
	int err;
	static uint8_t tx_buffer[1];
	static uint8_t rx_buffer[1];

	const struct spi_buf tx_buf = {
		.buf = tx_buffer,
		.len = sizeof(tx_buffer)
	};
	const struct spi_buf_set tx = {
		.buffers = &tx_buf,
		.count = 1
	};

	struct spi_buf rx_buf = {
		.buf = rx_buffer,
		.len = sizeof(rx_buffer),
	};
	const struct spi_buf_set rx = {
		.buffers = &rx_buf,
		.count = 1
	};
		nrf_gpio_cfg_output(&cs_pin);
		// GPIO_SetBits(SPI_CS_MS_DEMO_PIN);
		nrf_gpio_pin_set(&cs_pin);
		k_busy_wait(100000);
		// GPIO_ResetBits(SPI_CS_MS_DEMO_PIN);
		nrf_gpio_pin_clear(&cs_pin);
		tx_buffer[0]=0x9F;
		// SPI_Send_Receive_Data(&a, &a1);
		err = spi_transceive(spi_dev, &spi_cfg, &tx, &rx);
			//k_busy_wait(1000);
	if (err) {
		printk("SPI error: %d\n", err);
	}else{
		printk("TX sent: %x\n", tx_buffer[0]);
		printk("RX recv: %x\n", rx_buffer[0]);
	}
		rx_buffer[0]=0x00;
		tx_buffer[0]=0x00;
		// b1=SPI_Send_Receive_Data(&a, &a1);
		err = spi_transceive(spi_dev, &spi_cfg, &tx, &rx);
	if (err) {
		printk("SPI error: %d\n", err);
	}else{
		printk("TX sent: %x\n", tx_buffer[0]);
		printk("RX recv: %x\n", rx_buffer[0]);
	}
		rx_buffer[0]=0x00;
		tx_buffer[0]=0x00;
		// b2=SPI_Send_Receive_Data(&a, &a1);
		err = spi_transceive(spi_dev, &spi_cfg, &tx, &rx);
	if (err) {
		printk("SPI error: %d\n", err);
	}else{
		printk("TX sent: %x\n", tx_buffer[0]);
		printk("RX recv: %x\n", rx_buffer[0]);
	}
		rx_buffer[0]=0x00;
		tx_buffer[0]=0x00;
		// b3=SPI_Send_Receive_Data(&a, &a1);
		err = spi_transceive(spi_dev, &spi_cfg, &tx, &rx);
	if (err) {
		printk("SPI error: %d\n", err);
	}else{
		printk("TX sent: %x\n", tx_buffer[0]);
		printk("RX recv: %x\n", rx_buffer[0]);
	}
		// GPIO_SetBits(SPI_CS_MS_DEMO_PIN);
		nrf_gpio_pin_set(CS_PIN);
	
}

void main(void)
{
	printk("SPIM Example\n");
	spi_init();

	while (1) {
		spi_test_send();
		k_sleep(K_SECONDS(1));
	}
}

&spi3 {
    compatible = "nordic,nrf-spim";
    status = "okay";
    //sck-pin = <11>;
   // mosi-pin = <10>;
    //miso-pin = <12>;
};
this works and only gives me read values as FF

Simonr · Accepted Answer

Hi 
 I see that my colleague Kazi is helping you out in your recently created case, I suggest we you keep the discussion there, as getting information from two places at once will likely lead to confusion. Here are some quick answers to the questions you've asked here, but let's close this case for now and continue it in your latest one. In the future, please don't create multiple cases on one thread. 
 1. Yes, spi_nor.c must be included in your project to be used. 
 3. too few arguments means that you have not entered enough arguments/parameters in a given function. 
 Best regards, 
 Simon

w25q16jv interfacing with nRF 52833 board

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